EP2722635A2 - Panneau de protection balistique structurelle - Google Patents

Panneau de protection balistique structurelle Download PDF

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Publication number
EP2722635A2
EP2722635A2 EP13188331.6A EP13188331A EP2722635A2 EP 2722635 A2 EP2722635 A2 EP 2722635A2 EP 13188331 A EP13188331 A EP 13188331A EP 2722635 A2 EP2722635 A2 EP 2722635A2
Authority
EP
European Patent Office
Prior art keywords
layer
structural panel
ballistic protection
composite material
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13188331.6A
Other languages
German (de)
English (en)
Other versions
EP2722635A3 (fr
Inventor
Connie E. Bird
Gary Hamilton
Alan R. Goodworth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sikorsky Aircraft Corp
Original Assignee
Sikorsky Aircraft Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sikorsky Aircraft Corp filed Critical Sikorsky Aircraft Corp
Publication of EP2722635A2 publication Critical patent/EP2722635A2/fr
Publication of EP2722635A3 publication Critical patent/EP2722635A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/18—Floors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D7/00—Arrangements of military equipment, e.g. armaments, armament accessories, or military shielding, in aircraft; Adaptations of armament mountings for aircraft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/013—Mounting or securing armour plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0442—Layered armour containing metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00—Armoured or armed vehicles

Definitions

  • ballistic protection materials There are a variety of uses for ballistic protection materials. For example, personal armor, such as bullet proof vests, is useful for protecting individuals. Some ballistic protection materials have been incorporated into vehicles, such as military aircraft, ships or land vehicles. One aspect of most ballistic protection materials used for vehicle applications is that they are added on the vehicle to supplement the structural materials of the vehicle. While this approach is valuable in that it provides protection for occupants and vehicle components it has the drawback of adding weight and expense.
  • ballistic protection materials are designed for a specific purpose or to protect against an attack that involves a particular type of ammunition. It therefore may not be possible to utilize one type of ballistic protection material intended for one application in a different context.
  • a structural panel includes, among other things, a stiff composite material that establishes a base layer of the panel having a desired shape.
  • a high molecular weight polyethylene fiber composite material establishes a ballistic protection layer of the panel that is secured to the base layer.
  • a second composite material layer received against the ballistic protection layer such that the ballistic protection layer is situated between the second composite material layer and the base layer for providing a depth for recessed features.
  • Particular embodiments may include any of the following optional features, alone or in combination:
  • the second composite material layer may provide for a depth for at least one recessed feature.
  • the structural panel further may comprise a mounting plate having a base and a sidewall extending from an edge of the base to establish a recess, the mounting plate base being received against a first portion of the ballistic protection layer, the first portion of the ballistic protection layer having a first thickness, a second portion of the ballistic layer having a second, greater thickness; and a mounting member situated at least partially within the recess, the mounting member being configured for securing an item in a selected position relative to the structural panel.
  • the ballistic protection layer may have at least the first thickness across an entire surface area of the structural panel.
  • the base layer may comprise glass fibers.
  • the base layer may comprise magnesium aluminosilicate glass fibers.
  • the base layer may comprise at least one of a tape or a fabric comprising the glass fibers.
  • the base layer may comprise carbon fibers.
  • the base layer may comprise a fiber reinforced ceramic matrix composite material.
  • a vehicle comprises a frame structure; and a structural panel secured to at least a portion of the frame structure, the structural panel, comprising: a stiff composite material that establishes a base layer of the panel; a high molecular weight polyethylene fiber composite material that establishes a ballistic protection layer of the panel secured to the base layer; and a second composite material layer received against the ballistic protection layer such that the ballistic protection layer is situated between the second composite material layer and the base layer.
  • Particular embodiments may include any of the following optional features, alone or in combination:
  • the vehicle may comprise an aircraft.
  • the vehicle may comprise a helicopter.
  • the structural panel may establish at least a floor of the vehicle.
  • the vehicle further may comprise a mounting plate having a base and a sidewall extending from an edge of the base to establish a recess, the mounting plate base being received against a first portion of the ballistic protection layer, the first portion of the ballistic protection layer having a first thickness, a second portion of the ballistic layer having a second, greater thickness; and a mounting member situated at least partially within the recess, the mounting member being configured for securing an item in a selected position relative to the floor of the vehicle.
  • the ballistic protection layer may have at least the first thickness across an entire surface area of the floor.
  • the base layer may comprise at least one of glass fibers, carbon fibers, or a fiber reinforced ceramic matrix composite material.
  • the base layer may comprise magnesium aluminosilicate glass fibers.
  • a structural panel that is useful, for example, as a structural panel for a vehicle provides ballistic protection.
  • the structural panel is stiff and strong enough to be self-supporting and weight bearing yet light weight and an effective ballistic protection layer.
  • FIG. 1 schematically shows an example vehicle 20 including a plurality of structural panels 22 and 24.
  • the illustrated vehicle is an aircraft.
  • a rotary wing aircraft is illustrated for discussion purposes.
  • Other types of vehicles such as land vehicles or watercraft may include structural panels designed according to the teachings of this disclosure.
  • the structural panel 22 establishes a floor of the vehicle 20.
  • One feature of a structural panel designed according to the teachings of this disclosure is that the panel is stiff, lightweight and capable of establishing a floor of the vehicle 20 while providing ballistic protection.
  • Figure 2 illustrates a frame portion 30 of the example vehicle 20.
  • the frame portion 30 in this example includes a plurality of frame members 32, 34, 36 and 38 configured to establish a portion of the fuselage or passenger compartment of the vehicle 20.
  • the structural panel 22, which establishes the floor of the vehicle 20, in this example includes a plurality of individual panels 40.
  • each panel 40 is structurally stable enough to support the weight of individuals and cargo.
  • Each panel 40 is situated relative to the frame portion 30 to remain in a desired position relative to a remainder of the vehicle 20.
  • the panels 40 are self-supporting and capable of bearing a preselected amount of weight when they are sufficiently supported by the frame portion 30.
  • the panel is capable of bearing weight across the surface of the panel.
  • Each panel 40 includes at least two layers that establish the structural integrity of the panels along with providing ballistic protection for occupants or cargo in the vehicle 20.
  • Figure 3 is a cross-sectional illustration of an example composition of the example structural panels 40.
  • This example includes a stiff material layer 42 that establishes a base layer of the panel 40.
  • the base layer 42 can be considered a strike face as it faces the direction from which a projectile would approach the vehicle during an attack.
  • the base layer in one embodiment is a composite material including fibers for strength and stiffness.
  • Some example base layers include carbon fibers.
  • One feature of an embodiment containing carbon fibers is that the carbon layer may be very thin, which contributes to making the panels 40 very lightweight.
  • example base layers 42 include glass fibers.
  • One particular example includes magnesium aluminosilicate (S-2) glass fibers.
  • Some example base layers 42 comprise at least one of a glass fiber fabric or tape.
  • Another example base layer 42 includes a fiber reinforced ceramic matrix composite material.
  • a ballistic protection layer 44 comprises a high molecular weight polyethylene fiber composite material. Such materials are useful as a ballistic protection layer because they include extremely long chains of polyethylene, which all align in the same direction. The material derives its strength largely from the length of each individual chain. The long chains serve to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. Such materials are useful for ballistic protection because of their toughness and high impact strength. Commercially available materials that may be used in some example embodiments include DYNEEMA ® and SPECTRA ® .
  • the illustrated example includes a third, sandwich composite layer 46 that provides additional features.
  • the base layer 42 and sandwich composite layer 46 establish the structural stiffness and the ballistic protection layer 44 establishes the protective aspects of the example panels 40.
  • the sandwich composite layer 46 provides a barrier or covering over the ballistic protection layer 44 to guard against potential impact from individuals or items placed on the floor 22 of the vehicle 20
  • Some high molecular weight polyethylene fiber composite materials may not be considered suitable as a floor surface and adding a covering, such as the layer 46, increases the utility of the panel 40 without adding substantial weight.
  • Figure 3 includes a mounting plate 50 having a base 52 and a sidewall 54 that establish a recess 56.
  • a mounting member 58 is at least partially situated in the recess 56 and provides a structure to which another item such as a seat or cargo may be secured in place within the vehicle 20.
  • the mounting plate 50 is received against a portion of the ballistic protection layer 44 with some of the layer 46 received against at least some of the sidewall 54.
  • the ballistic protection layer 44 in this example has a first thickness t1 along the portion that abuts the base 52 of the mounting plate 50.
  • a remainder of the illustrated section of the ballistic protection layer 44 has a second, greater thickness t2.
  • a first mounting member 58a comprises a post for mounting a seat against the panel 40.
  • a second mounting member 58b comprises a cargo tie-down structure such as a ring.
  • the structural panels 40 are each capable of having several mounting plates 50 of various configurations secured to them to facilitate mounting seats or securing other items in a desired place within the vehicle 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
EP13188331.6A 2012-10-19 2013-10-11 Panneau de protection balistique structurelle Withdrawn EP2722635A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/655,936 US20140137724A1 (en) 2012-10-19 2012-10-19 Structural ballistic protection panel

Publications (2)

Publication Number Publication Date
EP2722635A2 true EP2722635A2 (fr) 2014-04-23
EP2722635A3 EP2722635A3 (fr) 2017-07-26

Family

ID=49447345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13188331.6A Withdrawn EP2722635A3 (fr) 2012-10-19 2013-10-11 Panneau de protection balistique structurelle

Country Status (2)

Country Link
US (1) US20140137724A1 (fr)
EP (1) EP2722635A3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016123070A1 (fr) * 2015-01-29 2016-08-04 Sikorsky Aircraft Corporation Système de trappe de véhicule, aéronef l'utilisant, et procédé de blindage de trappe de véhicule

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5167876A (en) * 1990-12-07 1992-12-01 Allied-Signal Inc. Flame resistant ballistic composite
GB9307324D0 (en) * 1993-04-07 1993-06-02 Courtaulds Aerospace Ltd Ballistic armour composites
AU775895B2 (en) * 1999-10-21 2004-08-19 C.N. Unwin Limited Improvements relating to anchorages
DE10252886A1 (de) * 2002-11-12 2004-06-03 Ibcol Composites Gmbh Befestigungssystem für Verkleidungselemente in Luftfahrzeugen
DE10324648B4 (de) * 2003-05-30 2008-01-10 Airbus Deutschland Gmbh Vorrichtung zur Aufnahme von Zurrvorrichtungen für ein Frachtladesystem eines Transportmittels, insbesondere eines Flugzeuges
US8709584B2 (en) * 2006-01-31 2014-04-29 Sikorsky Aircraft Corporation Composite aircraft floor system
US8869673B2 (en) * 2006-01-31 2014-10-28 Sikorsky Aircraft Corporation Structural panel with ballistic protection
US9103633B2 (en) * 2006-04-20 2015-08-11 Sikorsky Aircraft Corporation Lightweight projectile resistant armor system
US8640590B2 (en) * 2006-04-20 2014-02-04 Sikorsky Aircraft Corporation Armor system having ceramic composite with improved architecture
US8186262B2 (en) * 2006-05-01 2012-05-29 The University of Maryland at Baltimore County Methods and structures for sandwich panels with improved resistance to ballistic penetration
US8087339B2 (en) * 2007-07-24 2012-01-03 Foster-Miller, Inc. Armor system
WO2010033266A2 (fr) * 2008-05-02 2010-03-25 Battelle Memorial Institute Panneau composite léger atténuateur de souffle
US8251410B1 (en) * 2009-04-20 2012-08-28 Armorworks Enterprises LLC Armor hold-down assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
US20140137724A1 (en) 2014-05-22
EP2722635A3 (fr) 2017-07-26

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